Name changed for this.
Something went wrong with work I had prepared before going on holiday. When I returned, my manager made a light-hearted comment along the lines of “you did a booboo”, which made it clear to me that the assumption was that I'd made a mistake.
I'm actually confident I did everything correctly. I checked it myself and it worked, but when my manager tried to access the files, there was an error which was eventually fixed by someone else. Nobody established what caused it.
I'm really quite upset and uncomfortable that the assumption I've been careless has been left hanging, especially when I don't believe I've done anything wrong. I asked if we could look into what happened so it doesn't happen again, but my manager seemed keen to move on now it's been resolved. He doesn’t seem bothered, but I’m worried this will affect my chances of promotion next year. Also, I really want to understand what went wrong so that it doesn’t happen again.
AIBU to insist that this is investigated further and make clear that I don't accept that I made the mistake? And how to go about it? I don’t want to come across as pushy or trying to shift blame as it seems everyone has moved on and there’s no lasting damage.